/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:15:20,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:15:20,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:15:20,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:15:20,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:15:20,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:15:20,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:15:20,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:15:20,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:15:20,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:15:20,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:15:20,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:15:20,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:15:20,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:15:20,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:15:20,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:15:20,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:15:20,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:15:20,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:15:20,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:15:20,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:15:20,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:15:20,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:15:20,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:15:20,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:15:20,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:15:20,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:15:20,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:15:20,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:15:20,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:15:20,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:15:20,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:15:20,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:15:20,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:15:20,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:15:20,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:15:20,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:15:20,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:15:20,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:15:20,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:15:20,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:15:20,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:15:20,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:15:20,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:15:20,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:15:20,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:15:20,950 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:15:20,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:15:20,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:15:20,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:15:20,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:15:20,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:15:20,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:15:20,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:15:20,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:15:20,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:15:20,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:15:20,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:15:20,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:15:20,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:15:20,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:15:20,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:15:20,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:15:20,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:15:20,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:15:20,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:15:20,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:15:21,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:15:21,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:15:21,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:15:21,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:15:21,426 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:15:21,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c [2020-10-27 16:15:21,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8/FLAGf9c135b44 [2020-10-27 16:15:22,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:15:22,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label33.c [2020-10-27 16:15:22,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8/FLAGf9c135b44 [2020-10-27 16:15:23,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8 [2020-10-27 16:15:23,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:15:23,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:15:23,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:15:23,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:15:23,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:15:23,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:23" (1/1) ... [2020-10-27 16:15:23,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cf01ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:23, skipping insertion in model container [2020-10-27 16:15:23,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:23" (1/1) ... [2020-10-27 16:15:23,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:15:23,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:15:25,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:15:25,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:15:26,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:15:26,989 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:15:26,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26 WrapperNode [2020-10-27 16:15:26,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:15:26,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:15:26,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:15:26,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:15:27,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 16:15:27,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:15:27,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:15:27,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:15:27,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:15:27,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:15:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:15:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:15:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:15:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:15:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:15:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:15:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:15:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:15:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:15:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:15:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:15:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:15:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:15:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:15:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:15:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:15:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:15:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:15:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:15:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:15:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:15:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:15:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:15:37,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:15:37,800 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:15:37,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:37 BoogieIcfgContainer [2020-10-27 16:15:37,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:15:37,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:15:37,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:15:37,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:15:37,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:15:23" (1/3) ... [2020-10-27 16:15:37,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd1e69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:37, skipping insertion in model container [2020-10-27 16:15:37,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (2/3) ... [2020-10-27 16:15:37,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd1e69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:37, skipping insertion in model container [2020-10-27 16:15:37,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:37" (3/3) ... [2020-10-27 16:15:37,822 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label33.c [2020-10-27 16:15:37,835 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:15:37,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:15:37,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:15:37,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:15:37,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:15:37,912 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:15:37,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:15:37,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:15:37,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:15:37,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:15:37,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:15:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:15:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2020-10-27 16:15:38,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:15:38,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:15:38,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:15:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:15:38,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1880576681, now seen corresponding path program 1 times [2020-10-27 16:15:38,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:15:38,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951897904] [2020-10-27 16:15:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:15:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1685 [2020-10-27 16:15:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 16:15:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:15:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:15:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1676 [2020-10-27 16:15:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:15:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:15:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:15:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 16:15:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:15:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:15:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:15:49,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951897904] [2020-10-27 16:15:49,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:15:49,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:15:49,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815453595] [2020-10-27 16:15:49,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:15:49,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:15:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:15:49,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:15:49,296 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:16:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:16:25,514 INFO L93 Difference]: Finished difference Result 8239 states and 15621 transitions. [2020-10-27 16:16:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:16:25,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1661 [2020-10-27 16:16:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:16:25,598 INFO L225 Difference]: With dead ends: 8239 [2020-10-27 16:16:25,599 INFO L226 Difference]: Without dead ends: 5945 [2020-10-27 16:16:25,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:16:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2020-10-27 16:16:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5826. [2020-10-27 16:16:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5826 states. [2020-10-27 16:16:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 10165 transitions. [2020-10-27 16:16:25,964 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 10165 transitions. Word has length 1661 [2020-10-27 16:16:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:16:25,971 INFO L481 AbstractCegarLoop]: Abstraction has 5826 states and 10165 transitions. [2020-10-27 16:16:25,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:16:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 10165 transitions. [2020-10-27 16:16:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-27 16:16:26,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:16:26,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:16:26,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:16:26,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:16:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:16:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1392747890, now seen corresponding path program 1 times [2020-10-27 16:16:26,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:16:26,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343867992] [2020-10-27 16:16:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:16:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:31,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:31,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1713 [2020-10-27 16:16:31,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:16:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-27 16:16:31,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 16:16:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 16:16:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-27 16:16:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:16:35,092 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-27 16:16:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:16:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:16:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:16:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:16:36,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:16:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:16:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:16:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:16:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:16:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:36,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:16:36,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:16:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 16:16:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:16:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:16:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:16:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:16:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:16:56,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343867992] [2020-10-27 16:16:56,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:16:56,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 16:16:56,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505334347] [2020-10-27 16:16:56,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 16:16:56,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:16:56,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 16:16:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-27 16:16:56,247 INFO L87 Difference]: Start difference. First operand 5826 states and 10165 transitions. Second operand 25 states. [2020-10-27 16:16:57,391 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-27 16:16:57,791 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-10-27 16:17:04,772 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-27 16:17:06,280 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-10-27 16:17:08,908 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-27 16:17:09,285 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-10-27 16:17:20,230 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-27 16:17:20,623 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-10-27 16:17:31,387 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-27 16:17:31,765 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-10-27 16:17:35,897 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-10-27 16:17:43,048 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-27 16:17:43,413 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-27 16:17:48,028 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-10-27 16:17:55,034 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-27 16:17:56,163 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-27 16:17:56,492 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-27 16:18:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:18:19,342 INFO L93 Difference]: Finished difference Result 18163 states and 32515 transitions. [2020-10-27 16:18:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 16:18:19,349 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1687 [2020-10-27 16:18:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:18:19,419 INFO L225 Difference]: With dead ends: 18163 [2020-10-27 16:18:19,419 INFO L226 Difference]: Without dead ends: 12343 [2020-10-27 16:18:19,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 16:18:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2020-10-27 16:18:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 12331. [2020-10-27 16:18:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12331 states. [2020-10-27 16:18:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 17246 transitions. [2020-10-27 16:18:19,818 INFO L78 Accepts]: Start accepts. Automaton has 12331 states and 17246 transitions. Word has length 1687 [2020-10-27 16:18:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:18:19,821 INFO L481 AbstractCegarLoop]: Abstraction has 12331 states and 17246 transitions. [2020-10-27 16:18:19,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 16:18:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12331 states and 17246 transitions. [2020-10-27 16:18:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-27 16:18:19,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:19,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:18:19,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:18:19,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash -98443409, now seen corresponding path program 1 times [2020-10-27 16:18:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:19,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390844932] [2020-10-27 16:18:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5197 [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:18:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 16:18:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1674 [2020-10-27 16:18:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:26,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:18:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:18:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:18:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:26,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 16:18:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 16:18:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 16:18:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:18:29,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390844932] [2020-10-27 16:18:29,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:18:29,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:18:29,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526710263] [2020-10-27 16:18:29,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:18:29,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:29,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:18:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:18:29,289 INFO L87 Difference]: Start difference. First operand 12331 states and 17246 transitions. Second operand 6 states.